The FLP-1250 from Marki Microwave is a Low Pass RF Filter with Frequency DC to 11.5 GHz, Stopband Frequency 15.5 to 32 GHz, 3 dB Cutoff Frequency 12.5 GHz, Insertion Loss 0.6 dB, Rejection 25 to 50 dB. Tags: Module with Connector. More details for FLP-1250 can be seen below.